He's definitely unabashed in his love of Nineteen Eighty-Four. Diamond Dogs is a reference to the Bowie album inspired by the novel, which makes that tweet especially referential. He actually wanted to start the game with the tune "Diamond Dogs" and the idea was shot down.

(Please let this be an announcement that the deleted scene that supposedly ties up the story's loose ends is going to be produced...)

This most likely won't happen… but I would love the addition of some kind of co-op, even if it's just 2 player co-op. Whoever hosts the game would be Big Boss, the other would use their online avatar, and full credit for the missions would go to both. Only Side Ops and Free Roam would get this treatment. It's probably not even possible, but I can dream. 8)

Just what IF this whole BlackHound thing was missing MGSV content that's purpose was to make us feel loss (a prominent theme in the game)

Missing MGSV content is the true phantom pain. Miller lost arm and leg, Snake lost arm, other characters have lost language, we lose Kojima.

We also lost MGSV content. What if Black Hound is biggest ace up Kojima's sleeve? BELIEVE. V.

I'm partly joking, partly not. I know it sounds insane. But nothing with MGSV is quite as it seems. This is Kojima's LAST MGS. It's fair to expect him to go out with a bang. It's hard to imagine him skimping out on a story that supposedly bridges the gap. PATIENCE